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Insight-HXMT Observations of the 2023 Outburst in Aql X-1

文献类型：期刊论文

作者Yan Z(颜哲)5,6; Zhang GB(张国宝)5,6; Chen, Yu-Peng4; Méndez, Mariano3; Mao JR(毛基荣)5,6; Lyu, Ming1,2; Zhang, Shu4; Jin, Pei3
刊名RESEARCH IN ASTRONOMY AND ASTROPHYSICS
出版日期2025-04-01
卷号25期号:4
关键词accretion, accretion disks stars: individual (Aql X-1) stars: neutron X-rays: binaries X-rays: bursts
ISSN号1674-4527
DOI10.1088/1674-4527/adc3f4
产权排序第1完成单位
文献子类Article
英文摘要We conducted an analysis of the continuum during the onset and initial decline phases of the 2023 outburst in transient neutron star low-mass X-ray binary Aql X-1 using broadband observations from the Hard X-ray Modulation Telescope (Insight-HXMT) instrument. To determine the most appropriate model for the continuum of this outburst, we employed three models to explore the evolution of the spectral component. These observations revealed that the source transitions from the hard state to the soft state. The disk-corona and sphere-corona models both adequately described the spectra of the hard state, while the double blackbody model became preferable after the hard X-ray emission (>25 keV) disappeared during the state transition. In the soft state, the total emission is dominated by the accretion disk and two blackbody components. The combination of the sphere-corona model and the double blackbody model is the most suitable model for this outburst. The results suggest that as the source transitioned into the soft state, the emission from the boundary layer was enhanced, and a hot spot occurred. Notably, we identified two type-I X-ray bursts, one of which exhibited a significant hard X-ray deficit (significance similar to 4.82 sigma), which indicates that Insight-HXMT has the capability to capture the evolution of the corona in a single burst.
学科主题天文学 ; 天体物理学 ; 高能天体物理学 ; 星系与宇宙学
URL标识查看原文
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
WOS关键词X-RAY-BURSTS ; SOFT STATE TRANSITION ; BINARY AQUILA X-1 ; NEUTRON-STAR ; ACCRETION GEOMETRY ; SPECTRAL STATES ; TEMPORAL PROPERTIES ; XTE J1701-462 ; BEHAVIOR ; CORONA
资助项目National Key R&D Program of China[2021YFA0718500]; Yunnan Revitalization Talent Support Program; National Natural Science Foundation of China (NSFC)[12393813]; China Manned Space Project; Hunan Education Department Foundation[21A0096]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001463022900001
出版者IOP Publishing Ltd
资助机构National Key R&D Program of China[2021YFA0718500] ; Yunnan Revitalization Talent Support Program ; National Natural Science Foundation of China (NSFC)[12393813] ; China Manned Space Project ; Hunan Education Department Foundation[21A0096]
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/28254]  
专题星系类星体研究组
作者单位1.Key Laboratory of Stars and Interstellar Medium, Xiangtan University, Xiangtan 411105, China
2.Department of Physics, Xiangtan University, Xiangtan 411105, China;
3.Kapteyn Astronomical Institute, University of Groningen, P.O. BOX 800, 9700 AV Groningen, The Netherland;
4.Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;
5.University of Chinese Academy of Sciences, Beijing 100049, China;
6.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China; zhangguobao@ynao.ac.cn;
推荐引用方式
GB/T 7714		 Yan Z,Zhang GB,Chen, Yu-Peng,et al. Insight-HXMT Observations of the 2023 Outburst in Aql X-1[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2025,25(4).
APA 颜哲.,张国宝.,Chen, Yu-Peng.,Méndez, Mariano.,毛基荣.,...&Jin, Pei.(2025).Insight-HXMT Observations of the 2023 Outburst in Aql X-1.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,25(4).
MLA 颜哲,et al."Insight-HXMT Observations of the 2023 Outburst in Aql X-1".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 25.4(2025).

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来源：云南天文台

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